OFDM SIGNAL TRANSMITTING/RECEIVING METHOD AND OFDM SIGNAL TRANSMITTING/RECEIVING APPARATUS

WIPO Patent Application WO/2006/013858

A1

A pilot signal generator has a first pilot signal storing apparatus, a timing controller, and a number, N, of selectors that select and output any of the pilot signals in an OFDM symbol batch of N sections received from the pilot signal storing apparatus. Assume that the number of the subcarriers in an OFDM symbol is I, and that the pilot signal elements are p(i,a,b) for a subcarrier i (1≤i≤I) of b-th section (1≤b≤N) of an antenna a (1≤a≤N) for the number, N of sections, where one section is equivalent to the OFDM symbols or where one section is equivalent to an integral multiple of the OFDM symbols. In a case of a number, N times N times I, of pilot signal elements, or in a case when there exit any overlaps in the pilot signal elements, the first pilot signal storing apparatus stores the number of the pilot signal elements minus the number of those overlaps, then selects the pilot signal elements or a null signal for each subcarrier, and then outputs a thus constructed symbol pilot signal.

ASAI YUSUKE (JP)
OHTA ATSUSHI (JP)
UCHIDA DAISEI (JP)
ONIZAWA TAKESHI (JP)
AIKAWA SATORU (JP)

PCT/JP2005/014118

February 09, 2006

August 02, 2005

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NIPPON TELEGRAPH & TELEPHONE (JP)
ASAI YUSUKE (JP)
OHTA ATSUSHI (JP)
UCHIDA DAISEI (JP)
ONIZAWA TAKESHI (JP)
AIKAWA SATORU (JP)

H04J11/00; H04B7/04; H04J99/00

JP2003304216A	2003-10-24
JP2003304215A	2003-10-24

AUER G. ET AL.: "Analysis of pilot-symbol aided channel estimation for OFDM systems with multiple transmit antennas.", COMMUNICATIONS. NTERNATIONAL CONFERENCE ON PARIS, vol. 6, 2004, pages 3221 - 3225, XP010712337

Shiga, Masatake (Yaesu Chuo-k, Tokyo 53, JP)

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